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Fix #1054: speedup runlength decoding #1055

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Fix #1054: speedup runlength decoding #1055

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@helpmefindaname helpmefindaname commented Oct 23, 2024 •
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Pull request

Speeds up the runlength decoding, by not allocating a new bytearray on each step, gaining huge speedups on large image streams.

Closes #1054

How Has This Been Tested?

I have run the example I've provided in the respective issue and tested it on an pdf that crashed our production server with an OutOfMemroy error.

Checklist

  • I have read CONTRIBUTING.md.
  • I have added a concise human-readable description of the change to CHANGELOG.md.
  • I have tested that this fix is effective or that this feature works.
  • I have added docstrings to newly created methods and classes. # no updates required
  • I have updated the README.md and the readthedocs documentation. Or verified that this is not necessary. # no updates required

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Successfully merging this pull request may close these issues.

Runlength decoding allocates too much memory and is slow.
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